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/*
* Copyright 2017 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Authors: Tom St Denis <tom.stdenis@amd.com>
*
*/
#include "umr.h"
static int is_did_match(struct umr_asic *asic, unsigned did)
{
struct umr_asic *tmp;
int r = 0, q;
q = asic->options.quiet;
asic->options.quiet = 1;
tmp = umr_discover_asic_by_did(&asic->options, did);
if (tmp) {
if (!strcmp(tmp->asicname, asic->asicname)) {
asic->did = did;
r = 1;
}
umr_close_asic(tmp);
}
asic->options.quiet = q;
return r;
}
struct umr_asic *umr_discover_asic(struct umr_options *options)
{
char driver[256], name[256], fname[256];
FILE *f;
unsigned did;
struct umr_asic *asic;
if (options->forcedid < 0) {
snprintf(name, sizeof(name)-1, "/sys/kernel/debug/dri/%d/name", options->instance);
f = fopen(name, "r");
if (!f) {
int found = 0;
if (!options->quiet) {
f = popen("lsmod | grep ^amdgpu", "r");
while (fgets(name, sizeof(name)-1, f)) {
if (strstr(name, "amdgpu"))
found = 1;
}
pclose(f);
perror("Cannot open DRI name under debugfs");
if (!found)
printf("ERROR: amdgpu.ko is not loaded.\n");
else
printf("ERROR: amdgpu.ko is loaded but /sys/kernel/debug/dri/%d/name is not found\n", options->instance);
}
return NULL;
}
fscanf(f, "%s %s %s\n", driver, name, driver);
fclose(f);
// strip off dev= for kernels > 4.7
if (strstr(name, "dev="))
memmove(name, name+4, strlen(name)-3);
snprintf(driver, sizeof(driver)-1, "/sys/bus/pci/devices/%s/device", name);
f = fopen(driver, "r");
if (!f) {
if (!options->quiet) perror("Cannot open PCI device name under sysfs (is a display attached?)");
return NULL;
}
fscanf(f, "0x%04x", &did);
fclose(f);
asic = umr_discover_asic_by_did(options, did);
} else {
if (options->dev_name[0])
asic = umr_discover_asic_by_name(options, options->dev_name);
else
asic = umr_discover_asic_by_did(options, options->forcedid);
}
if (asic) {
memcpy(&asic->options, options, sizeof(*options));
snprintf(fname, sizeof(fname)-1, "/sys/kernel/debug/dri/%d/amdgpu_regs", asic->instance);
asic->fd.mmio = open(fname, O_RDWR);
snprintf(fname, sizeof(fname)-1, "/sys/kernel/debug/dri/%d/amdgpu_regs_didt", asic->instance);
asic->fd.didt = open(fname, O_RDWR);
snprintf(fname, sizeof(fname)-1, "/sys/kernel/debug/dri/%d/amdgpu_regs_pcie", asic->instance);
asic->fd.pcie = open(fname, O_RDWR);
snprintf(fname, sizeof(fname)-1, "/sys/kernel/debug/dri/%d/amdgpu_regs_smc", asic->instance);
asic->fd.smc = open(fname, O_RDWR);
snprintf(fname, sizeof(fname)-1, "/sys/kernel/debug/dri/%d/amdgpu_sensors", asic->instance);
asic->fd.sensors = open(fname, O_RDWR);
snprintf(fname, sizeof(fname)-1, "/sys/kernel/debug/dri/%d/amdgpu_wave", asic->instance);
asic->fd.wave = open(fname, O_RDWR);
snprintf(fname, sizeof(fname)-1, "/sys/kernel/debug/dri/%d/amdgpu_vram", asic->instance);
asic->fd.vram = open(fname, O_RDWR);
snprintf(fname, sizeof(fname)-1, "/sys/kernel/debug/dri/%d/amdgpu_gpr", asic->instance);
asic->fd.gpr = open(fname, O_RDWR);
snprintf(fname, sizeof(fname)-1, "/dev/dri/card%d", asic->instance);
asic->fd.drm = open(fname, O_RDWR);
// if appending to the fd list remember to update close_asic() and discover_by_did()...
if (options->use_pci) {
// init PCI mapping
int use_region;
void *pcimem_v;
struct pci_device_iterator *pci_iter;
pciaddr_t pci_region_addr;
pci_system_init();
pci_iter = pci_id_match_iterator_create(NULL);
if (!pci_iter) {
fprintf(stderr, "Cannot create PCI iterator");
goto err_pci;
}
do {
asic->pci.pdevice = pci_device_next(pci_iter);
} while (asic->pci.pdevice && !(asic->pci.pdevice->vendor_id == 0x1002 && is_did_match(asic, asic->pci.pdevice->device_id)));
if (!asic->pci.pdevice) {
fprintf(stderr, "Could not find ASIC with DID of %04lx\n", (unsigned long)asic->did);
goto err_pci;
}
pci_iterator_destroy(pci_iter);
pci_device_probe(asic->pci.pdevice);
use_region = 6;
// try to detect based on ASIC family
if (asic->family <= FAMILY_SI) {
// try region 2 for SI
if ( asic->pci.pdevice->regions[2].is_64 == 0 &&
asic->pci.pdevice->regions[2].is_prefetchable == 0 &&
asic->pci.pdevice->regions[2].is_IO == 0) {
use_region = 2;
}
} else if (asic->family <= FAMILY_VI) {
// try region 5 for CIK..VI
if ( asic->pci.pdevice->regions[5].is_64 == 0 &&
asic->pci.pdevice->regions[5].is_prefetchable == 0 &&
asic->pci.pdevice->regions[5].is_IO == 0) {
use_region = 5;
}
}
// scan for a 256K/512K region
if (use_region == 6) {
for (use_region = 0; use_region < 6; use_region++)
if ((asic->family < FAMILY_NEXT && asic->pci.pdevice->regions[use_region].size == (256UL * 1024)) ||
(asic->family == FAMILY_NEXT && asic->pci.pdevice->regions[use_region].size == (512UL * 1024)))
break;
}
if (use_region == 6) {
fprintf(stderr, "Could not find PCI region (debugfs mode might still work)\n");
goto err_pci;
}
asic->pci.region = use_region;
pci_region_addr = asic->pci.pdevice->regions[use_region].base_addr;
if (pci_device_map_range(asic->pci.pdevice, pci_region_addr, asic->pci.pdevice->regions[use_region].size, PCI_DEV_MAP_FLAG_WRITABLE, &pcimem_v)) {
fprintf(stderr, "Could not map PCI memory\n");
goto err_pci;
}
asic->pci.mem = pcimem_v;
}
}
return asic;
err_pci:
umr_close_asic(asic);
return NULL;
}
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